Chapter 9.7, Problem 10E

Interpretation Introduction

Interpretation:

To determine the given term is partial molar Helmholtz free energy or not.

Concept introduction:

Partial molar property:

Partial molar property is a partial derivative of the solution property with respect to change in partial molar property with respect to change in number of moles of component “i” at constant variables of volume, temperature, and number of moles.

Write the general expression for the of partial molar property from equation (9.28)

${\overline{M}}_i={\left(\frac{\partial \left(n\underset{\_}{M}\right)}{\partial \left(n_i\right)}\right)}_{T,P,n_j,j\ne i}$

Here, molar property is $\underset{\_}{M}$, number of moles in the system is $n$, number of moles in the component is $n_i$, temperature is $T$, and pressure is P.